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Selected:Fault IsolationLASR (Lightweight Approach for Software Reviews)Value Chain AnalysisATAM (Architecture Tradeoff Analysis Method)
| Criterion |  Engineering Fault Isolation |  Architecture LASR (Lightweight Approach for Software Reviews) |  Business Strategy Value Chain Analysis |  Architecture ATAM (Architecture Tradeoff Analysis Method) |
|---|---|---|---|---|
Purposedifferent | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | LASR helps development teams identify where their software falls short of important quality goals and which improvements to consider. A small group with existing system knowledge can make an initial assessment and investigate open questions in more detail. | Value Chain Analysis shows where value is created, costs accrue, and differentiation becomes possible along the process. It compares strengths, risks, market logic, and courses of action. The result is captured as a value-chain map and lever list. | ATAM helps teams weigh architecture decisions when quality goals compete. The team considers business goals, stakeholder expectations, and technical decisions together. The evaluation shows which risks need further investigation. |
Complexitydifferent | Medium | Medium | High | High |
Timedifferent | 30-180 min | 3–4 h for initial assessment; preparation and deeper analysis additional | Half day | Several meetings plus preparation and analysis; total effort depends on scope |
Participantsdifferent | 1-6 | 1 or a small team; particularly suitable for 3–4 people | 3-8 | Evaluation team, architects, and relevant stakeholders |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Lean Mission Statement describing the software’s purpose, Prioritized quality goals and evaluation criteria, Risks and estimated gaps against quality goals, More closely examined findings and open checks | Value Chain Map, Lever List | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations |
Tagsno overlap | TroubleshootingDiagnosisEngineering | ArchitectureQualityRiskAssessmentLean | StrategyBusiness modelDiagnosisAnalysis | ArchitectureQualityRiskTradeoffsStakeholders |